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willysmjeeps.com :: View topic - Fuel tank vent valve m170 m38a1
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Fuel tank vent valve m170 m38a1

 
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bl5211a
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Joined: Dec 28, 2006
Posts: 344
Location: NC
PostPosted: Mon Sep 30, 2019 5:20 pm    Post subject: Fuel tank vent valve m170 m38a1 Reply with quote
How does one test if the fuel tank vent valve is still good ?
Part 8332556 valve, fuel tank.

Should I be able to blow air through it ?

Brian
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Brian
1955 M170
1940 BSA M20
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wesk
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Joined: Apr 04, 2005
Posts: 16239
Location: Wisconsin
PostPosted: Mon Sep 30, 2019 6:26 pm    Post subject: Reply with quote
It should flow one way. IN. Do not forget the tank has two vents. The valve on top and the filler cap. If you are having trouble with the tank not feeding the fuel pump well it is often the cap's vent valve which someone had closed for fording and forgot to open.
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45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

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bl5211a
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PostPosted: Tue Oct 01, 2019 5:15 am    Post subject: Reply with quote
Thanks , is there a crack pressure for the in valve ? Couple psi maybe ?
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Brian
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1940 BSA M20
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bl5211a
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PostPosted: Tue Oct 01, 2019 5:21 pm    Post subject: Reply with quote
Hey Wes , I was able to test with psi on in side , it’s cracking open at a few psi in .
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